MPN: Current Transformer Range — industrial control spare part, in stock at TGK Parts.
Current transformers turn a primary current into a measurable 5A or 1A secondary signal — for energy meters, motor management relays and drive feedback. When a CT fails (open secondary, insulation breakdown), the protection it feeds misreads or trips. We supply solid-core and split-core CTs across standard ratios and accuracy classes, plus voltage transformers.
Send your ratio, VA burden and window size (or a photo), and we match the CT.
| Primary current | 5A to 5000A standard ratios |
|---|---|
| Secondary | 5A or 1A output |
| Types | Solid-core (busbar/window), split-core (openable), wound primary |
| Accuracy | Class 0.5 / 1 / 3 for metering and protection |
| Mounting | Busbar, DIN rail and panel mount |
| Accessories | Shorting blocks, terminal covers, mounting feet |
| Condition | New (OEM or equivalent) |
| Warranty | 12 months |
Replacement and spare part for industrial automation equipment — production lines, CNC machines, packaging machinery, textile machinery, printing equipment and more.
Preferably not — protection CTs are designed for fault currents without saturating. Metering CTs lose accuracy above rating and can mislead protection.
Split-core CTs retrofit around existing cables without breaking the circuit; solid-core CTs are more accurate and cheaper when installing new.
An open CT secondary develops dangerous voltage. Shorting blocks let you service the meter circuit safely with the primary energized.